Hot appliance



H. V. BARCLAY.

HOT APPLIANCE.

APPLICATION man MAY 22. I918.

PatenbedSept. 7, 1920.

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UNITED STATES HJALMAR V. BARCLAY, OF NEW YORK, N. Y.

HOT APPLIANCE.

Application filed May 22, 1918.

To all whom it may concern Be it known that I, HJ'ALMAR V. BARCLAY, a citizen of the United States, and resident oi the borough of Manhattan, in the city, county, and State of New York, have invented certain new and useful Improvements in Hot Appliances, 01' which the following a specification.

This invention relates to hot appliances for therapeutic purposes, and my improvement comprehends the employment oi? a hol low pad or bandage, for application to the part of the body to be treated; together with means for passing a current of heated air through said pad or bandage, to accord thereto the desired temperature.

The pad or bandage comprising my improved hot appliance is characterized as composed of a double fold of flexible material, such as textile fabric, in the form of a hollow, flat cushion, the folds or plies thereof being separated by such means as will permit the passage of air thercthrough, while at the same time serving to prevent both the distention of the appliance or'its collapse at any portion of its area. In other words it is my aim to provide a ilat and relatively thin, hollow pad, of suitable size and shape, which, without distortion, can be heated by a flow of hot air passing freely therethrough.

For convenience, electric power may be employed to operate a blower to create a current of air, and also to energize a resistance coil, located intermediate said blower and, a flexible tube, which latter is in communication with the air inlet to the appliance; the appliance also being provided with an outlet for the heated air at a point distant from the inlet.

By the means indicated the appliance will become heated up very quickly through the use of the electric blower, which may be like those commonly employed by barbers for drying the hair.

Should the heat developed be excessive for a particular treatment, it may be moderated by the admixture of cold air, which can be drawn into the appliance through a valve adjacent to the inlet for hot air.

Other features and advantages at my in vention will hereinafter appear.

Specification of Letters Patent.

Patented Sept. 7. 1920.

Serial No. 236,022.

In the drawing Figure l is a plan view, partly in section, comprising the several elements included in my invention, and

Fig. 2 is a section on the line 22 oi Fig. 1.

My improved hot appliance, which may be styled a hollow pad, bandage or wrapper, is here shown as composed of two plies of fabric 1, 2, connected at their edges to form a container. The material of said fabric may be either coated or treated to enable it to resist deterioration under the influence of heat; and also whereby it may be substan tially impermeable to the passage of air under moderate pressure.

Interposed between the plies l and 2 is a separator 3, which may consist, as shown in the example, of a coil or series of coils of Wire, lying in such manner as to extend over the entire intervening area, to hold apart said plies and thusto maintain an intermediate space of equal cross-sectional extent tl'iroughout. The coil or coils 3 may be secured from shifting as by means of stitches 5, which also serve to bind the plies 1 and 2 in their relative parallel arrangement, so that they cannot bulge apart or distend locally under the influence of internal air pressure. Obviously the wire coils aforesaid answer the purpose of separating the plies of fabric without themselves interfering with the passage of air therebetween. At one end or edge of the appliance it is provided with a neck portion 6, serving as an air inlet, which connects with a duct 7, that may be in the form oi. a flexible metal tube; said tube being here shown as provided with an asbestos covering 8.

A small electric blower, as 9, having a connector for engagement with an electric light socket, may be utilized to generate a current of air, for delivery, through duct 7 to inlet 6. Air heating means, energized by the blower motor, are located in the path of the air current, and, as here shown, consist of a resistance coil 10, contained within a casing 11, and located between the blower and tube 7; thus forming a section of the air assage.

T e hot appliance, at a point distant from inlet: 6, is provided with an air outlet 12,

which may be in form of a. nozzle, to which a flexible tube may be fitted, for carrying oil the exhaust hot air.

A valve 13 in the inlet 6 is provided for the admission of cool uir under the aspirating influence of the flow of heated air, when it is desired to regulate the temperature of the latter by such admixture. Said valve me be either closed or opened to a greater or .ess extent.

[he hot appliance, being flexible, may be wrapped as a bandage about the potients limb or other part to be treated, or it may be made of any desired she. as and size suited for siecizil applications. ein pliable in its su stance, it will adapt itsel f to surface contours, to thus impart the heat it receives directly to the niiected part of the body requiring treatment.

The temperature available by means of this appliance may be greater end more quickly generuted than can be supplied by electrical conductors threaded through the fabric, because in that instance the in suinting; means which must be provided, cletruct from the output of useful heat.

The noise created by the whir of the motor may be muilied by inclosing said motor in at ease, as 14.

Obviousl for cold applications, the air may be chilled or refrigerated, by suitable means, in its passage to the appliance.

Variations may be resorted to within the spirit and scope of my said invention and parts thereof used. without others.

I claim:

1. in a hot appliance, in oonibiruition, u hollow, flexible pod, having an inlet and an outlet, u blower, on electric hunter, means for conveying air from said blower and heater to said inlet, and moons for udmittin regulated quantities of cool air to said inlet.

2. In a hot appliance, in combination, a. hollow, flexible pod, having an inlet and an outlet, a blower, a motor to drive said blower, a tube connecting said blower and inlet, and a resistance coil located in said tube and included in the motor circuit to the ener ized thereby, whereby air delivered by said %Jlower is heated in its passage to said pad.

3. In it hot" appliance, in combination, n. hollow flexible pad having an inlet and an outlet, :1 blower, an electric heater, and means for conveying heated air therefrom to said inlet.

Signed at the boron h of Manhattan, in the city, county, end tete of New York this 20th da of May A. D. 1918.

lIJALMAR V. BARCLAY.

Witnesses:

F. W. BARKER, A. B. BARKER. 

